Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between HIMAWARI-9 and NOAA-21 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 5/17/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 05/18/2025 04:16:32 -0.00, 140.77 -0.84, 136.93 437.87 80
2 05/19/2025 04:00:28 -0.01, 140.77 0.12, 141.46 78.74 80
3 05/21/2025 16:00:54 0.01, 140.75 0.05, 140.71 5.43 80
4 05/24/2025 04:04:08 -0.01, 140.73 -0.21, 139.93 91.44 80
5 05/25/2025 03:48:04 -0.01, 140.72 0.82, 144.45 425.81 80
6 05/26/2025 16:09:54 -0.00, 140.69 0.31, 139.17 173.20 80
7 05/27/2025 15:48:30 -0.00, 140.68 -0.66, 143.70 344.09 80
8 05/29/2025 04:10:27 0.01, 140.67 -0.52, 138.39 259.63 80
9 05/30/2025 03:54:24 0.00, 140.65 0.51, 142.92 258.35 80
10 05/31/2025 16:13:33 -0.00, 140.61 0.66, 137.64 338.79 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/17/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250518.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 05/17/2025 in txt file.

Historical Predications of SNOs between HIMAWARI-9 and NOAA-21